APA citiranje

Ekelund, R. B. (1990). A history of economic theory and method. New York: McGraw-Hill.

Trích dẫn kiểu Chicago

Ekelund, Robert B. A History of Economic Theory and Method. New York: McGraw-Hill, 1990.

MLA citiranje

Ekelund, Robert B. A History of Economic Theory and Method. New York: McGraw-Hill, 1990.